Metallic-spidered fiber pulley



W. D. HAMERSTADT METALLIC SPIDERED FIBER PULLEY June 16, 1925.

FiledA May 5, 1924 I N VEN TOR. "7u/M D. #nnen-Mar:

A TTORNEYS.

Patented J uneY 16, i 1925.

Ularlio STATES PATENT 'oFFlcEg wILLIaMD. HAivIEasfrAn'r, or INDIANAPOLIS, INDIANA. Y

. MnTALLIcsPID-nnnn FIBER PULLEY.

'Application' mea May a, 19211. sensi No 710,710.

To all whom it may concern.'

Be it known that I, VILLIAM D. Harina# STADT, a citizen of the United States, and a resident of` Indianapolis, county of Marion,

and State oflndiana,have invented a cer-` tain nevv anduseful lVIetallic-Spidered Fiber Pulley; and I" do hereby declare that the followingisa full, clear, and exact `description thereof, reference being had to the accompanying drawings, ',navhich lilre-nuL nierals refer to like parts.

This invention relates to pulley `of me-r dium size andis of'I the character known as The chief feature of `the invention con` sists in the construction' of a `metallic! hubbed and metallic spidcredfibrous pulley including aV plurality of spider-forming Yarms` which are `detachably 4associated with a hub and the iibrous portions ,for securing the latter to the former in fibrous pulley forma# tion.

forming spider-forming arms ofsheet metal and associating a pair of said arms having aligned openings with a Support for securing the lfibrous pulley forming portions in pulley-forming formation upon the spider arms. i

Another feature of the invention consists in forming inthe lends of said spider form-- ing arms tubular port-ions Which are adapted to support the fibrous pulleyforming portions in pulley formation. p i

Another feature of the invention consists in4 associating the desired number of spider- `forming arms so that the base portions thereof form a substantially continuous hub sup` ported portion Whilethe Yarms extend out- Wardly therefrom and in'spaced` relation Witheach other.

l thereof.

2 audil'lustrates onestep in the assembly OneV feature of the invention consists inV rlhe` full naturej of the invention will be understood from the accompanying drawings and the." followingdescription and claims;` l i In the drawings, Fig. 1 is a side elevation? al vien7 of. a fibrous pulley including a me-` tallic hub and metallic"spider-forming arms supporting the `pulley portion upon the hub.` Fig. 2 1s a sectional` virenr taken on` the line ofFig. 1 and in the direction of the' varrows and shows the parts in assembled relation and pulley formation. Fig. 3` is aV front view ofvone ofthe spider-forming arms. Fig. 4: is an end elevational view Fig. 5 is a view similar to Fig.

ofthe pulley-forming parts. Fig 6 is ,a view similar to Fig. 5 andof a later, step'. Fig. 7 1s a View similar to Figs.

fibrous pulley. u Y

In the drawings 10 indicates a metallic hub havinga shaft opening 11,7and herein said hub is lshown provided with a medianly positionedradially projecting Hangs 12, said flange at `suitable intervals being' provided withy longitudinally positioned openings 1B Which are in spaced and parallel relation With each other. Y

Reference will be had to Figs. 3

"and 4L 5 and 6 and Y of a still later step in the formation of .the1

wherein there is illustrated one of the spiderforming arms. Herein said arms are shown substantially keystone-shaped andy include a pair of edges 14 which are joinedto a common arcuate edge V15 by the radial edges 16. ln the portion oftheplate defined by the arcuate edge, Vthe* radial Vedge and the adjacent edge, there isprovided an aperture 17. Positioned inedianly With respect to the plate, there isv also provided. another aperture 18 which herein is defined by a pro,- jecting sleeve or tube 19. Parallel' to the edges 14, thereis provided a raised or em bossed portion 20.' These embossments increase the strength and stiffness of the sheet metal spider-formingarm.

`Reference will now be had to Figs. 1 and 2. The several spider forming arms are substantially.` identical and are grouped in pairs as shown vclearly in Fig. 2. A pair of spider-forming arms is hereinillustrated asisecured upon oppositesides of the median peripheral edge 12 of the hub 10 by rivets or the 'like 21 passing through the opening 13 and registering openings 17 of adjacent spider-forming arms. As shown clearly in Figs. 1 and 2, the hub-engaging portions of the adjacent spider-formingarms overlap. lVhen in this position, the embossinents extend outwardly from the flange 12 and the tubular port-ions 19 of the spiderforming arms also extend oppositely and outwardly from each other. Herein but four spider-forming arms aie illustrated, the number, however, may be increased and dcicreased atl will, and the angles between the edges 14 and 16 will Vary according to the diameter of the pulley. Likewise the central angle determined by the arc will also vary, the latter decreasing as the size of the pulley increases, although this variation is not necessary.

Reference will now be had to Figs. 5, 6 and 7. After the several arms -have been secured together in spaced relation about the periphery of the hub, or prior thereto, if desired, there is inserted between said parallel spider constructions the annular fibrous forming portions 23, each of which is apertured as at 24. liilhen the desired width of material is interposed between the free ends of the spider-forming constructions, a supporting pin 25 is positioned within the sleeve 19 .and through the apertures 24e of the annular members 23, and thus the cenA tral portion of the pulley construction is assembled` which construction is shown in Fig. 5. After the foregoing takes place, there is positioned upon opposite sides of the lateral support 25 a suitable number of annular yfibrous pulley-forming sections 23, the saine having aligned openings .2-/1 which are receivable by the lateral support. After they are positioned as shown in Fig. 6, they are compressed and as shown 'in Fig. 7 the sleeveforming portions 19 are forced into the openings 24 and the entire construction thus forms a substantially complete full width periphery from the outer parts of the last-mentioned pulley-forming sections. After the foregoing have been positioned, the remainder lof the pulleyforming sections are also positioned upon the support 25 and are pressed thereon. The peripheral surface thereafter may be operated upon to crown the same or otherwise fashion the same as desired. If desired, the supports 25 may be tubular, and to said tubular lateral supports 25 may be secured end pla-tes; although by the present process of manufacturing, such end plates or washers are not necessary. j

lVhile the invention has been described in great detail in the foregoing specifta' tions, the many modifications 'thereof which will readily suggest themselves to those skilled in the art, are to be considered as illustrative and not restrictive in character, as outlined by the appended claims.

The invention claimed is:

l. A fibrous wheel including a hub, a plurality of radially projecting metallic arms, each terminating in a longitudinal and transversely extending sleeve, a pin positionable in said sleeve and projecting beyond the same for support purposes, and a plurality of annular fibrous and suitably apertured wheel-forming sections secured to the arms by the sleeves and pins seating in said apertures.

2. A fibrous wheel including a hub, a plurality of pairs of radially projecting metallic arms, each pair having aligned openings in their ends, a laterally projecting sleeve defining each opening, a support for each pair of arms and seatable in the sleeve defined openings, and a plurality of annular fibrous and suitably apertured wheel-forming sections secured between said arms and supported by said support.

A fibrous wheel including a hub, a plurality of pairs of rradially projecting metal- .lic arms, each pair having aligned Iopenings in their ends, a laterally projecting sleeve defining each opening and extending oppositely from each other, a support for each pair of arms and seatable in the sleeve defined openings, and a plurality of annular fibrous and suitably apertured wheel-forining sections having a. number thereof secured between said arms and supported by said support and others positioned upon opposite sides of said arms and supported by said sleeve.

Ll. A fibrous wheel including a hub, a plurality of pairs 0f radially projecting metallic arms, each pair having aligned openings in their ends, a laterally projecting sleeve defining each opening and extending oppo` sitely from each other, a support for each pair of arms and seatable in the sleeve defined openings, and a plurality of annular fibrous and suitably apertured wheel-forming sections having a number thereof secured between said arms and supported by said support and others positioned upon opposite sides of said arms and supported by said sleeve, said lateral support projecting beyond said sleeves and other of said sections being positioned thereon.

5. A fibrous wheel including a hub, a plurality of pairs of radially projecting metal lic arms, each pair having aligned openings in their ends, a laterally projecting sleeve defining each opening and extending oppositely from each other, a support for each pair of arms and seatable in the sleeve defined openings and projecting outwardly therefrom, and a plurality of annular fibrous and suitably apertured wheel forming seclll lUU

llO

tions secured upon opposite sides of said arms and supported by said sleeves and said support.

6. A ibrous Wheel including a, hub, a plurality of pairs of radially projecting metallic arms, each pair having1 aligned openings in their ends, a laterally projecting sleeve defining each opening and extending oppoy 

